Effects of manure application rates on soil loss and crop yields

2017 ◽  
Vol 3 (3) ◽  
pp. 171
Author(s):  
Taffa Tulu
Keyword(s):  
Soil Loss ◽  
Crop Yields ◽  
Manure Application ◽  
Application Rates

scholarly journals Tillage and crop management impacts on soil loss and crop yields in northwestern Ethiopia

2021 ◽  
Author(s):  
Fekremariam Asargew Mihretie ◽  
Atsushi Tsunekawa ◽  
Nigussie Haregeweyn ◽  
Enyew Adgo ◽  
Mitsuru Tsubo ◽  
...  
Keyword(s):  
Soil Loss ◽  
Crop Yields ◽  
Crop Management

Impacts Of Changing Herd Sizes On The Effects Of Manure Application Rates

2007 ◽  
Author(s):  
Edward Osei ◽  
Bing Du ◽  
Larry M Hauck
Keyword(s):  
Manure Application ◽  
Application Rates

Size of subsoil clods affects soil-water availability in sand–clay mixtures

Soil Research ◽  
2016 ◽  
Vol 54 (3) ◽  
pp. 276 ◽  
Author(s):  
Giacomo Betti ◽  
Cameron D. Grant ◽  
Robert S. Murray ◽  
G. Jock Churchman
Keyword(s):  
Hydraulic Conductivity ◽  
Soil Water ◽  
Best Management Practices ◽  
Water Availability ◽  
Water Retention ◽  
Management Practices ◽  
Crop Yields ◽  
Root Zone ◽  
Soil Water Availability ◽  
Application Rates

Clay delving in strongly texture-contrast soils brings up subsoil clay in clumps ranging from large clods to tiny aggregates depending on the equipment used and the extent of secondary cultivation. Clay delving usually increases crop yields but not universally; this has generated questions about best management practices. It was postulated that the size distribution of the subsoil clumps created by delving might influence soil-water availability (and hence crop yield) because, although the clay increases water retention in the root-zone, it can also cause poor soil aeration, high soil strength and greatly reduced hydraulic conductivity. We prepared laboratory mixtures of sand and clay-rich subsoil in amounts considered practical (10% and 20% by weight) and excessive (40% and 60% by weight) with different subsoil clod sizes (<2, 6, 20 and 45 mm), for which we measured water retention, soil resistance, and saturated hydraulic conductivity. We calculated soil water availability by traditional means (plant-available water, PAW) and by the integral water capacity (IWC). We found that PAW increased with subsoil clay, particularly when smaller aggregates were used (≤6 mm). However, when the potential restrictions on PAW were taken into account, the benefits of adding clay reached a peak at ~40%, beyond which IWC declined towards that of pure subsoil clay. Furthermore, the smaller the aggregates the less effective they were at increasing IWC, particularly in the practical range of application rates (<20% by weight). We conclude that excessive post-delving cultivation may not be warranted and may explain some of the variability found in crop yields after delving.

Effect of row width on herbicide and cultivation requirements in row crops

1992 ◽  
Vol 7 (4) ◽  
pp. 161-167 ◽  
Author(s):  
Frank Forcella ◽  
Mark E. Westgate ◽  
Dennis D. Warnes
Keyword(s):  
Weed Control ◽  
Crop Yield ◽  
Crop Yields ◽  
Row Crops ◽  
Low Input ◽  
Application Rates ◽  
Row Width ◽  
Herbicide Treatments ◽  
Herbicide Use

AbstractCrops grown in narrow rows (NR, 0.25 to 0.38 m) shade weed seedlings more than do those grown in traditional wide rows (WR, 0.76 m). NR crops may require less herbicide and interrow cultivation than WR crops for equally effective weed control. This hypothesis was tested by comparing weed control and crop yield in NR and WR crops when the following percentages of recommended application rates (RAR) of standard herbicides were applied: soybean, 0, 50 and 100%; sunflower, 0, 25, 50, and 100%; and corn, 0, 33, and 100% in three separate sets of experiments conducted over 2, 3, and 4 years, respectively. In all treatments with 100% RAR, excellent weed control prevented reductions in crop yield. When only 25 to 50% RAR was applied, weed control was consistently high in NR (82 to 99% control), but variable in WR (42 to 99% control). Weed control and crop yields typically were lowest in NR without herbicides. Interrow cultivation controlled 0 to 81% of weeds in WR crops. In reduced herbicide treatments (25 to 50% RAR), yields of NR soybean and sunflower typically were about equal to those in WR with 100% RAR, but NR corn yields were about 10% less. Considering the reduced herbicide use and lower weed control costs, planting corn, soybean, and sunflower in narrow rows may represent a practical form of low-input production of these important crops.

scholarly journals Soil Chemical Properties and Yield Response of Okra (Abelmoschus Esculentus L) to Different Organic Fertilizer Sources

2021 ◽  
Vol 25 (2) ◽  
pp. 66-74
Author(s):  
Benedict. O. Unagwu ◽  
Roseline. U. Ayogu ◽  
Vivian.O. Osadebe
Keyword(s):  
Growth Performance ◽  
Crop Yields ◽  
Organic Fertilizer ◽  
Animal Manure ◽  
Organic Fertilizers ◽  
Control Treatment ◽  
Yield Response ◽  
Pig Manure ◽  
Manure Application ◽  
Animal Manures

The study investigated the effects of animal manures (cow manure, CoM; chicken droppings, CkD; and pig manure, PiM) applied at 15 t ha-1 equivalent rate on the soil and growth performance of okra grown in a degraded ultisol. The treatments (CoM; CoM; PiM and Control unamended) were laid out in a completely randomized design and replicated three times. Animal manure application had significant effects on soil properties. Soilorganic matter increased by over 9% in the amended treatment relative to the control treatment. Except for N, increases in P (circa 14-70%)and K (circa 15-46%) nutrients were higher for CkD treatment than in other  treatments. Generally, the amended treatments maintained a significantly higher (p ≤0.05) plant leave number, stem girth, plant height, okra pod length and yields when compared with the Control treatment. The results indicated that application of animal manure enhanced okra growth performance. The findings suggest that animal manure application can potentially increase okra yield when grown in a degraded soil. It is recommended that farmers use ample (15 t ha-1) ) quantity of animal manures to increase their crop yields, which invariably will enhance their income. Keywords: Soil fertility, organic fertilizers okra growth, okra yield response, farmers okra yeild.

scholarly journals The Effects of Chicken Manure Application Rates on Growth and Yield of Swiss Chard (Beta vulgaris var. cicla L.)

2020 ◽  
pp. 12-19
Author(s):  
Chawe Dlamini ◽  
Michael T. Masarirambi ◽  
Paul K. Wahome ◽  
Tajudden O. Oseni
Keyword(s):  
Beta Vulgaris ◽  
Block Design ◽  
Growth Yield ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Inorganic Fertilizers ◽  
Manure Application ◽  
Application Rates ◽  
Swiss Chard ◽  
Shoot Mass

Swiss chard (Beta vulgaris var. cicla) is a leafy vegetable that belongs to the Chenopodiaceae family. The leaves are cooked, if still tender they are used in salads. Over the years, Emawati have adopted the use of inorganic fertilizers as they are easy to apply and come with recommended application rates. However, their main drawback is that they are environmentally unfriendly especially when washed into rivers, streams and other water bodies. For this cause, the use of animal manures has been promoted. Four-week-old Swiss chard seedlings were transplanted on the 4th of February, 2016 in 1.5 x1.5 m plots with an inter and intra row spacing of 45 cm and they were irrigated twice a day during the first week and every second day from the second week until the end of the experiment. The experiment was conducted at the Horticulture Department Farm, Faculty of Agriculture and Consumer Sciences, Luyengo Campus of the University of Swaziland to determine the effects of chicken manure application rates on growth, yield and quality of Swiss chard. Four chicken manure application rates (10, 20, 40 and 80 t/ha) and a recommended 900 kg/ha, inorganic basal fertilizer with a 125 kg/ha LAN top dressing fertilizer used as a control. A Randomised Complete Block Design (RCBD) with four replicates was used. The study showed that the application of 80 t/ha of chicken manure improved the growth and yield of Swiss chard. It is recommended that farmers may use 80 t/ha of chicken manure because it gave the best results compared to the other treatments. The highest fresh shoot mass (237.5 g) was obtained in plants treated with 80 t/ha of chicken manure while the lowest fresh shoot mass (100.0 g) was obtained in plants fertilized with inorganic fertilizers. It was concluded that 80 t/ha was the best under the conditions of this study and it was found that fresh mass at the end was the most important parameter to consider.

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